May · Australia
Best time to visit Perth in May Weather, crowds & prices
Weather in Perth in May
Average temperature 17°C, 103 mm of rain, about 28 days with 6+ hours of sunshine and 68% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
May score
8.0/10
Ranked #9 of 12 months
- Avg temp
- 17°C
- Rainfall
- 103 mm
- Humidity
- 68%
- Days with 6h+ sun
- 28
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
May in Perth scores 8.0/10 for sightseeing and cultural travel - ranked #9 of 12. Expect around 17°C, 103 mm of rain, and roughly 28 days with 6+ hours of sunshine this month.
Perth spreads along the Swan River, with Kings Park, Indian Ocean beaches, and Rottnest Island close by.
May in Perth: strong conditions, 9th of 12
Temperatures hover around 17°C (62°F) — the kind of month where neither heat nor cold forces the schedule.
103 mm of rain makes this a wet month here, though with about 28 days with 6+ hours of sunshine there is still bright weather between the fronts.
That is 8/10 on the same scale — 9th of 12 months, versus 10/10 for the best month here.
Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella.
Expect low-season pricing, and crowds are light for this destination.
If your dates are flexible, November is materially better in Perth — 2 points higher on the same scale.
Frequently asked
- What is the weather like in Perth in May?
- In May, Perth averages 17°C, 103 mm of rain, and about 28 days with 6+ hours of sunshine. Its climate-comfort score is 8.0/10.
- Is May a good time to visit Perth?
- May earns a 8.0/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Perth in May?
- Expect about 103 mm of rain in May. Average humidity is 68% and there are about 28 days with 6+ hours of sunshine.
Curated in Perth
Tickets & experiences
Things to do in Perth
Perth, Australia. Live activities and tours from GetYourGuide, matched to this destination.